This book was written at the invitation of Dr. H. GOTZE of Springer-Verlag for the series "Monographs in Endocrinology." It is not a comprehensive account of the prostaglandins but has been writ ten with a deliberate emphasis upon those aspects of the field in which I am particularly interested and to which, in some cases, I have made a contribution. I am grateful to Miss E. PFISTERER and her colleagues of Springer Verlag for their excellent work. I should also like to thank my wife without whose patience, encouragement and help this book would never have been completed. Finally this is an...